CN112623269A - Embedded control surface clearance and skewness automatic detection method and equipment - Google Patents
Embedded control surface clearance and skewness automatic detection method and equipment Download PDFInfo
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- CN112623269A CN112623269A CN202011413224.7A CN202011413224A CN112623269A CN 112623269 A CN112623269 A CN 112623269A CN 202011413224 A CN202011413224 A CN 202011413224A CN 112623269 A CN112623269 A CN 112623269A
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- 238000012423 maintenance Methods 0.000 claims abstract description 7
- 230000003321 amplification Effects 0.000 claims abstract description 6
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 6
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B64—AIRCRAFT; AVIATION; COSMONAUTICS
- B64F—GROUND OR AIRCRAFT-CARRIER-DECK INSTALLATIONS SPECIALLY ADAPTED FOR USE IN CONNECTION WITH AIRCRAFT; DESIGNING, MANUFACTURING, ASSEMBLING, CLEANING, MAINTAINING OR REPAIRING AIRCRAFT, NOT OTHERWISE PROVIDED FOR; HANDLING, TRANSPORTING, TESTING OR INSPECTING AIRCRAFT COMPONENTS, NOT OTHERWISE PROVIDED FOR
- B64F5/00—Designing, manufacturing, assembling, cleaning, maintaining or repairing aircraft, not otherwise provided for; Handling, transporting, testing or inspecting aircraft components, not otherwise provided for
- B64F5/60—Testing or inspecting aircraft components or systems
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Abstract
The invention relates to an embedded control surface clearance and deflection automatic detection method and equipment, wherein an upper computer controls an electric cylinder to apply continuous loading force to a control surface through an RS232 serial port, an embedded controller collects a force sensor and a gap displacement sensor in real time, the force sensor and the gap displacement sensor are transmitted to the upper computer through an RS422 serial port after low-pass filtering, signal amplification and differential collection, a force-displacement curve is drawn in real time after being analyzed by the upper computer, a control surface clearance value is calculated, the upper computer transmits a control surface deflection control command to an on-machine maintenance assembly through the RS422 serial port to drive the control surface to deflect, the embedded controller collects deflection displacement sensor signals in real time, the deflection displacement sensor signals are transmitted to the upper computer through the RS422 serial port, the control surface deflection value is calculated through the upper computer analysis, and a motor power supply supplies power to the electric cylinder. The invention realizes the self-detection, the automatic test and the automatic acquisition and interpretation of test data of the equipment, has high measurement precision of the clearance displacement of the control surface and the deflection displacement of the control surface, and has good reliability, maintainability and safety.
Description
Technical Field
The invention belongs to the technical field of avionics, and particularly relates to a control plane clearance and deflection detection device for an airplane flight control system.
Background
The automatic detection equipment for the clearance and the deflection of the control surfaces is ground equipment which is developed for various types of airplanes and is suitable for outfield detection, and is suitable for detecting the clearance and the deflection value of each control surface of a flight control system after the airplane is assembled, an actuator is replaced and the flight control system is checked at regular inspection.
The flight control system control surface clearance measurement of airplanes at home and abroad mostly adopts a manual mode to load control surface driving force and is matched with an analog circuit to acquire sensor signals; the deflection value of the control surface is measured by an angle measuring ruler, and a deflection result of the control surface is obtained by observing a tester. The problems that arise include: the measurement efficiency is low, the measurement precision is low, and the reliability of the measurement result is low.
Disclosure of Invention
The invention provides an embedded-based method and equipment for automatically detecting the clearance and the skewness of a control surface, which can realize automatic test, automatic interpretation and high-precision acquisition of the clearance and the skewness of the control surface and effectively solve the problems.
The technical scheme of the invention is an embedded-based control surface clearance and skewness automatic detection method and equipment, which comprises the following steps: the device comprises an upper computer, an embedded controller, a motor power supply, a sensor power supply, a force sensor, a gap displacement sensor, an offset displacement sensor, a clamp and an electric cylinder, and is characterized in that the upper computer controls the electric cylinder to apply continuous loading force to a control surface through an RS232 serial port, the embedded controller collects the force sensor and the gap displacement sensor in real time, sends the signals to the upper computer through an RS422 serial port after low-pass filtering, signal amplification and differential collection, draws a force-displacement curve in real time after the signals are analyzed by the upper computer, calculates a control surface gap value, sends a control surface deflection control command to an upper maintenance assembly of the machine through the RS422 serial port to drive the control surface to deflect, collects the offset displacement sensor signals in real time by the embedded controller, sends the signals to the upper computer through the RS422 serial port after the low-pass filtering and the differential collection, calculates the control surface offset value through the upper computer analysis, and the motor power supply for the electric, the sensor power supply supplies power for the force sensor, the gap displacement sensor, the deflection displacement sensor and the embedded controller, and the clamp is used for installing and connecting the electric cylinder, the force sensor, the gap displacement sensor, the deflection displacement sensor and the control surface. The connection principle of the automatic detection equipment for the clearance and the skewness of the control surface is shown in figure 1.
Software and hardware of the automatic detection equipment for the clearance and the skewness of the control surface are in modular design, so that the integration level of the equipment is improved, and the failure rate is reduced. The full automation of the testing process is realized, the errors caused by manual introduction are reduced, and the testing precision is improved. The host computer makes the equipment quickly adapt to different airplane models by loading different configuration files, and improves the universality and flexibility of the equipment.
The automatic detection equipment for the clearance and the skewness of the control surface realizes the self-detection, the automatic test and the automatic acquisition and interpretation of test data of the equipment, the measurement precision of the clearance displacement of the control surface is less than or equal to 0.01mm, and the measurement precision of the skewness displacement of the control surface is less than or equal to 1mm, and meanwhile, the automatic detection equipment has good reliability, maintainability and safety.
Drawings
FIG. 1 is an electrical connection schematic diagram of an automatic detecting device system for control surface clearance and skewness
FIG. 2 is a diagram of an embedded controller hardware architecture
FIG. 3 is a schematic view of the installation of the control surface skewness detecting clamp
FIG. 4 is a schematic diagram of a control surface clearance detection method
FIG. 5 is a schematic diagram of a method for detecting deviation of control surface
Detailed Description
The device comprises an upper computer, an embedded controller, a motor power supply, a sensor power supply, a force sensor, a gap displacement sensor, an offset displacement sensor, a clamp and an electric cylinder, wherein the upper computer provides a man-machine interaction interface for completing control and result analysis of a test of the control plane gap and the offset of a flight control system, when the control plane gap test is carried out, the upper computer controls the electric cylinder to automatically move through an RS232 serial port, simultaneously receives data collected by the force sensor and the gap displacement sensor and uploaded by the embedded controller according to a specified communication protocol, displays the data in a graphical interface mode, and after the test is finished, the upper computer automatically calculates the gap value of the tested control plane according to a set of control plane gap detection method, judges and fills the gap value into a report. When the deflection of the control plane is tested, the upper computer sends a deflection control instruction of the control plane to the onboard maintenance assembly through the RS422 serial port to drive the deflection of the control plane, and simultaneously receives data collected by a deflection displacement sensor uploaded by the embedded controller according to a specified communication protocol, and after the test is finished, the upper computer automatically calculates the deflection value of the control plane to be tested according to a set of deflection detection method of the control plane, judges and reads the deflection value and fills the deflection value into a report.
The automatic detection equipment for the control surface clearance and the skewness adopts two power supplies, a motor power supply provides 28VDC 3A power supply for an electric cylinder, a sensor power supply provides 10VDC 0.5A power supply for a force sensor, 24VDC 1A power supply for a clearance displacement sensor and a skewness displacement sensor, and 5VDC 2A and +/-15 VDC 0.5A power supply for an embedded controller.
The embedded controller is realized by adopting a PowerPC + CPLD architecture, the hardware architecture is shown in figure 2 and has the functions of self-detection, overcurrent protection and fault isolation, and the embedded controller starts self-detection after receiving a self-detection instruction of the upper computer and uploads a self-detection result to the upper computer for display. The embedded controller adopts FIFO design to ensure the integrity of receiving and sending data, 4 paths of low-pass filtering and differential acquisition circuits are designed, the acquisition channel adopts isolation design, 1 path of low-pass filtering and amplifying circuits are designed, and the gain error is 1%. The embedded controller can collect signals of the force sensor, the gap displacement sensor and the deflection displacement sensor in real time, and the signals are transmitted to an upper computer through an RS422 serial port after being subjected to low-pass filtering and signal amplification.
The clamp comprises a moment loading platform and a displacement detection platform, wherein when the control surface gap is detected, the moment loading platform provides mounting support for the electric cylinder and is connected with the electric cylinder, the force sensor and the control surface, and the displacement detection platform provides mounting support for the gap displacement sensor and is connected with the gap displacement sensor and the control surface. The upper computer sends an instruction to the electric cylinder through the RS232 serial port to control the electric cylinder to start, stop and stretch, and in the primary test process, the electric cylinder sequentially executes the steps of starting, extending, retracting, reversely extending and retracting to the initial position. The force sensor is installed between electronic jar and control surface, and clearance displacement sensor laminating is on the control surface, and when electronic jar motion, force sensor and clearance displacement sensor transmit the embedded controller collection with the displacement of change with the power that the control surface received with the signal of telecommunication form. When the deflection of the control surface is detected, only the detection table needs to be moved to provide mounting support for the deflection displacement sensor and connect the deflection displacement sensor and the control surface, and the mounting mode is shown in fig. 3. The upper computer sends a control surface deflection control instruction to the onboard maintenance assembly through the RS422 serial port, drives the control surface to deflect, pulls a pull rope of the deflection displacement sensor, and the deflection displacement sensor transmits the deflection displacement of the control surface to the embedded controller in an electric signal form for collection. The embedded controller uploads collected signals of the force sensor, the gap displacement sensor and the deflection displacement sensor to an upper computer through an RS422 serial port after low-pass filtering and signal amplification, the upper computer analyzes the data and then draws a force-displacement curve, as shown in figure 4, the abscissa is the displacement of the control surface, the ordinate is the stress of the control surface, the upper computer adopts a linear regression algorithm as a tangent line of a loading curve at a turning position, then the distance delta X between the tangent line and the intersection point of the abscissa is taken, and finally the clearance value of the control surface is obtained according to the following formula.
Δ α is control surface clearance (°);
Δ X is the distance (mm) between the tangent of the loading curve at the turn and the intersection of the abscissa;
and L is the distance (mm) from the installation position of the clamp to the rotating shaft of the control surface.
The method for detecting the deflection of the control surface is shown in fig. 5, and after the upper computer analyzes the data of the deflection displacement sensor, the deflection value of the control surface is obtained according to the following formula.
Delta beta is control plane deflection (°);
the delta X is the control surface displacement (mm) analyzed by an upper computer;
and L is the distance (mm) from the mounting position of the clamp to the rotating shaft.
Example of the implementation
The application of the method and the device for automatically detecting the clearance and the skewness of the control surfaces of ailerons of a certain type of airplane in an actual case is explained by taking the clearance and the skewness of the control surfaces as an example. Before detecting the gap of the control surface of the aileron, firstly, after completing all electrical connections according to the figure 1, a 'motor power supply' switch and a 'sensor power supply' switch are turned on, and an upper computer is started. The upper computer sends a self-checking instruction to the embedded controller, the embedded controller reports a self-checking result after completing self-checking, the upper computer pops up a text window, if the text content is 'self-checking success', the equipment self-checking is successful, the test can be continued, and if the text content is 'CH X channel abnormity' X represents a corresponding channel number, the self-checking is failed, and troubleshooting is needed. And then the upper computer controls the electric cylinder to stretch out and draw back, the stroke of the electric cylinder is adjusted to a scale position of-2 mm- +2mm, then the installation among the torque loading platform, the electric cylinder, the force sensor and the aileron is completed, and the installation among the detection platform, the gap displacement sensor and the aileron is moved, so that the connection of all parts is ensured to be stable. Selecting a control surface gap detection and current test item in an upper computer, filling test information and a tester, clicking a start button, automatically calibrating the data of a force sensor and a gap displacement sensor by the upper computer, automatically controlling an electric cylinder to complete one motion cycle after the zero calibration is finished, receiving the data of the force sensor and the gap displacement sensor uploaded by an embedded controller, drawing a force-displacement curve in real time after analysis, clicking a stop button after the electric cylinder stops moving, calculating a control surface gap value according to the control surface gap automatic detection method explained above by the upper computer, filling the control surface gap value into a test report, and displaying the control surface gap value as black if the test result meets the requirement, or displaying the control surface gap value as red if the test result meets the requirement. Selecting control surface deflection detection in the upper computer, clicking a start button to automatically zero the deflection displacement sensor data of the upper computer, after zero calibration is finished, the upper computer sends a control surface deflection instruction to an on-machine maintenance assembly, meanwhile, receives the deflection displacement sensor data uploaded by the embedded controller, clicking a stop button after the control surface stops moving, calculating the deflection value of the control surface according to the control surface deflection automatic detection method explained above by the upper computer, filling the deflection value into a test report, and displaying the deflection value as black if the test result meets the requirement, or displaying the deflection value as red if the test result meets the requirement. All the historical data of the completed test, including a historical force-displacement curve, a test gap value and a deviation value, can be checked in the upper computer. The detection process of the gaps and skewness of other control surfaces is similar to that of the detection process, and only the clamp needs to be adjusted and the corresponding test items in the upper computer need to be selected.
Claims (10)
1. An automatic detection equipment of control surface clearance and skewness based on it is embedded includes: the device comprises an upper computer, an embedded controller, a motor power supply, a sensor power supply, a force sensor, a gap displacement sensor, an offset displacement sensor, a clamp and an electric cylinder, and is characterized in that the upper computer controls the electric cylinder to apply continuous loading force to a control surface through an RS232 serial port, the embedded controller collects the force sensor and the gap displacement sensor in real time, sends the signals to the upper computer through an RS422 serial port after low-pass filtering, signal amplification and differential collection, draws a force-displacement curve in real time after the signals are analyzed by the upper computer, calculates a control surface gap value, sends a control surface deflection control command to an upper maintenance assembly of the machine through the RS422 serial port to drive the control surface to deflect, collects the offset displacement sensor signals in real time by the embedded controller, sends the signals to the upper computer through the RS422 serial port after the low-pass filtering and the differential collection, calculates the control surface offset value through the upper computer analysis, and the motor power supply for the electric, the sensor power supply supplies power for the force sensor, the gap displacement sensor, the deflection displacement sensor and the embedded controller, and the clamp is used for installing and connecting the electric cylinder, the force sensor, the gap displacement sensor, the deflection displacement sensor and the control surface.
2. The automatic detection equipment for the clearance and the skewness of the control surfaces based on the embedded type as claimed in claim 1, wherein the upper computer provides a man-machine interaction interface, communicates with the embedded type controller and the onboard maintenance assembly through RS422 serial ports, communicates with the electric cylinder through RS232 serial ports, realizes the functions of instruction sending, data analysis, calculation result, report printing and historical data viewing, and can be adapted to the clearance and the skewness detection of the control surfaces of different types of aircrafts by loading configuration files.
3. The automatic detection equipment for the clearance and the skewness of the control surfaces based on the embedded type as claimed in claim 1, wherein the embedded type controller is realized by adopting a PowerPC + CPLD architecture, has the functions of self-detection, overcurrent protection and fault isolation, collects signals of the force sensor, the clearance displacement sensor and the skewness displacement sensor in real time, and uploads the signals to an upper computer through an RS422 serial port after low-pass filtering and signal amplification.
4. The automatic detection equipment for control surface clearance and skewness based on the embedded type of claim 1, wherein a motor power supply supplies 28VDC 3A power to an electric cylinder with the accuracy of +/-1%.
5. The automatic detection device for control surface clearance and skewness based on the embedded type of claim 1, wherein the sensor power supply supplies power for the force sensor with 10VDC 0.5A, supplies power for the clearance displacement sensor and the skewness displacement sensor with 24VDC 1A, and supplies power for the embedded type controller with 5VDC 2A and +/-15 VDC 0.5A, and the accuracy is +/-1%.
6. The automatic detection device for control surface clearance and skewness based on embedding of claim 1, characterized in that a force sensor transmits the force exerted by an electric cylinder on the control surface to an embedded controller in the form of a voltage signal, the effective measurement range of the force sensor is 120kg, and the precision is F.S +/-0.03%.
7. The embedded automatic detection equipment for the clearance and skewness of the control surface based on the claim 1, characterized in that a clearance displacement sensor transmits the displacement of the control surface when being stressed to an embedded controller in the form of a current signal, the effective measurement range of the clearance displacement sensor is-4 mm, and the precision is 0.01 mm.
8. The embedded automatic detection equipment for the clearance and deflection of the control surface as claimed in claim 1, wherein the deflection displacement sensor transmits the deflection displacement of the control surface to the embedded controller in the form of voltage signal, the effective measurement range of the deflection displacement sensor is 0-750 mm, and the precision is ± 0.1% FS.
9. The automatic detection equipment for the clearance and deflection of the control surface based on the embedded type according to claim 1, characterized in that a clamp provides a mounting support for an electric cylinder and is connected with the electric cylinder, a force sensor, a clearance displacement sensor, a deflection displacement sensor and the control surface; the electronic jar accepts host computer instruction and accomplishes and open and stop, flexible control, and electronic jar stroke is 30mm, possesses spacing protect function.
10. The embedded automatic detecting equipment for the clearance and the skewness of the control surfaces based on the claim 2 is characterized in that the upper computer automatically calculates the clearance value and the skewness value of the control surfaces according to a set of detection methods for the clearance and the skewness of the control surfaces.
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Cited By (3)
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| CN113884889A (en) * | 2021-10-29 | 2022-01-04 | 蜂巢能源(上海)有限公司 | Battery safety early warning method and device, storage medium and electronic equipment |
| CN115783303A (en) * | 2022-11-30 | 2023-03-14 | 无锡北微传感科技有限公司 | High-precision dynamic measurement real-time monitoring system for multiple control surfaces of aircraft |
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Application publication date: 20210409 |